EP3907126A1 - Cargo bicycle with width alteration - Google Patents

Cargo bicycle with width alteration Download PDF

Info

Publication number
EP3907126A1
EP3907126A1 EP21171591.7A EP21171591A EP3907126A1 EP 3907126 A1 EP3907126 A1 EP 3907126A1 EP 21171591 A EP21171591 A EP 21171591A EP 3907126 A1 EP3907126 A1 EP 3907126A1
Authority
EP
European Patent Office
Prior art keywords
load
cargo bike
wheel
wheels
bike according
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Granted
Application number
EP21171591.7A
Other languages
German (de)
French (fr)
Other versions
EP3907126B1 (en
Inventor
Thomas Völkl
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Voelkl Patente GmbH and Co KG
Original Assignee
Voelkl Patente GmbH and Co KG
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Voelkl Patente GmbH and Co KG filed Critical Voelkl Patente GmbH and Co KG
Publication of EP3907126A1 publication Critical patent/EP3907126A1/en
Application granted granted Critical
Publication of EP3907126B1 publication Critical patent/EP3907126B1/en
Active legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Images

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K7/00—Freight- or passenger-carrying cycles
    • B62K7/02—Frames
    • B62K7/04—Frames having a carrying platform
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/02—Tricycles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62K—CYCLES; CYCLE FRAMES; CYCLE STEERING DEVICES; RIDER-OPERATED TERMINAL CONTROLS SPECIALLY ADAPTED FOR CYCLES; CYCLE AXLE SUSPENSIONS; CYCLE SIDE-CARS, FORECARS, OR THE LIKE
    • B62K5/00—Cycles with handlebars, equipped with three or more main road wheels
    • B62K5/10—Cycles with handlebars, equipped with three or more main road wheels with means for inwardly inclining the vehicle body on bends
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62M—RIDER PROPULSION OF WHEELED VEHICLES OR SLEDGES; POWERED PROPULSION OF SLEDGES OR SINGLE-TRACK CYCLES; TRANSMISSIONS SPECIALLY ADAPTED FOR SUCH VEHICLES
    • B62M6/00—Rider propulsion of wheeled vehicles with additional source of power, e.g. combustion engine or electric motor
    • B62M6/40—Rider propelled cycles with auxiliary electric motor
    • B62M6/60—Rider propelled cycles with auxiliary electric motor power-driven at axle parts

Definitions

  • the invention relates to cargo bicycles for transporting loads and thus also being able to ride along cycle paths or footpaths.
  • Cargo bikes are known in different designs: On the one hand, single-track cargo bicycles are known, but in which the load capacity is very limited.
  • cargo bikes are known in which the chassis, i.e. the frame, is designed in such a way that the front part of the saddle strut to the front, the driver's part, is conventionally designed, i.e. with a single, steerable front wheel, while the rear part of the Chassis, the load part, carries a loading platform.
  • the loading platform is usually supported by two wheels next to each other, mostly standing up next to the loading platform, which means that the loading area is not freely accessible from all sides and that the width of the vehicle is significantly wider than the width the loading area and the load.
  • the loading area can also be located in front of the driver, who either steers the third wheel or, if the loading platform is at the front, also the two wheels on the loading platform.
  • Another problem is how such a large load as a loaded Euro pallet - if there is no forklift truck available - can be brought onto the loading area of the cargo bike and can also be unloaded again.
  • a cargo bike usually consists of a driver part, which includes the saddle for the driver and at least the swiveling handlebar with which he steers the cargo bike, as well as a cargo part which has a load carrier and two wheel units with one wheel each, spaced transversely to the direction of travel.
  • a driver part which includes the saddle for the driver and at least the swiveling handlebar with which he steers the cargo bike, as well as a cargo part which has a load carrier and two wheel units with one wheel each, spaced transversely to the direction of travel.
  • at least one of the wheels is operatively connected to a drive motor.
  • the load part can be located at the front or the rear, with a load part arranged at the front, the individual wheel of the bicycle part can be steerable or the two wheels on the load part.
  • the cargo bike has on the one hand an adjustment device to adjust the two transversely spaced wheels of the load part between a loading position with a small distance and a driving position with a greater distance, and a lifting device with a liftable load carrier that is under the load can be retracted and this can be lifted.
  • the loading of the load by means of the lifting device can be carried out in a simple manner, even if it is a large and heavy, one-piece load such as a loaded Euro pallet.
  • the two wheels of the load part can be shifted towards each other towards the center so that they are under the load and preferably do not protrude laterally over the load, so that the maximum width of the load bike in the driving position by the specified maximum width of the load, usually a euro pallet, does not exceed.
  • the two wheels are moved so far apart that the load can be retracted between them and can be gripped by the lifting device.
  • the liftable load carrier of the lifting device therefore preferably consists of two lifting prongs - usually adjustable in their transverse spacing from one another - which can be moved into the free spaces under the pallet by moving the entire cargo bike accordingly.
  • the lifting tines are then raised by the lifting device to above the height of the wheel units of the load part and the wheel units are retracted towards the center under the lifted load carrier in the form of the lifting tines and the load.
  • the load can be placed laterally on the two wheel units located underneath, in particular the wheel covers provided above each of the wheels, so that the weight of the load no longer completely rests on the lifting tines.
  • the load can only rest on the lifting tines while driving and hover at a distance above the two wheels of the load part, whereby the center of gravity is slightly higher.
  • the load carrier such as the lifting tines, can be fixed at the height above the wheel units, preferably locked in a form-fitting manner, in order to avoid undesirable lowering onto the wheel units - which then do not necessarily have to have a wheel cover - while driving.
  • the two transversely spaced wheel units on the chassis of the load part can be displaced in the transverse direction, and the load carrier that can be raised in height is likewise guided in height on the chassis of the load part.
  • the chassis of the load part usually also houses the batteries for the electrically powered drive motor.
  • the wheel units can either be linearly displaceable in the transverse direction or can be pivoted about a pivot axis running in the direction of travel from a position under the load to a position outside and next to the load.
  • the wheel units can either be attached to the chassis of the load part or to the load carrier that can be lifted. Fastening it to the load carrier has the advantage that the inward pivoting can take place with the load carrier raised so high that the wheels do not yet have any contact with the ground when the load carrier is pivoted inward, and the load carrier is only then lowered.
  • the wheels When attached to the chassis of the cargo part, the wheels are always in contact with the ground or at least before they reach their driving position, so that the adjustment to the driving position can only take place when the cargo bike is moving, at least towards the end of the adjustment movement.
  • the cargo bike can also have an additional pedal drive, which has the effect that an electrical drive support is added in a predetermined ratio to the drive force brought in via the pedal drive, so that there is no speed sensor on the bicycle part, but at most a selector switch for the amount of electrical Support.
  • the two wheels of the load part are preferably electrically driven, and preferably via two independently controllable electric motors, so that their speed when cornering can be adjusted so that the outside wheel rotates faster.
  • a first sensor can be present on the fork of the cargo bike, which detects the steering angle of the handlebar and reports this to the controller by means of a signal.
  • the cargo bike can be designed in such a way that the driver's part can be tilted for cornering about an approximately horizontal axis running in the direction of travel relative to the cargo part.
  • a beam of the driver's part is then preferably attached to the load part so that it can be tilted about this tilting axis and a second sensor there detects the tilting angle, which - in addition to or instead of - the steering angle is also made available to the controller to control the speeds of the two motors when cornering.
  • the driver part is preferably arranged in front of the load part, and the lifting prongs protrude from the chassis of the load part to the rear, so that the cargo bike has to be moved backwards in order to move under the load.
  • the wheels of the load part are preferably sprung with respect to the chassis of the load part, for example by being attached to a rocker arm, which can be pivoted about a rocker axis on the load part at a distance from the wheel axis.
  • the suspension can be provided by a torsion body, which can in particular be arranged around the rocker axis in order to pivot the rocker back into the normal position.
  • the driving brake can at least partially be made available in that the electric driving motor acts as a generator without a power supply and thus develops a deceleration effect, which is in particular adjustable in its recuperation effect.
  • the parking brake is preferably a mechanical, non-positive brake or also a positive brake, for example in that, as is known, brake shoes can be pressed against the two sides of a brake disc that rotates with the corresponding wheel.
  • the braking elements are then preloaded into the braking position and only moved and held electrically in the non-braking position by means of electricity from the battery or the electric motor acting as a generator, so that the parking brake is active in the de-energized state.
  • an additional pedal drive is available, this is preferably not mechanically connected to one of the wheels, but via a so-called electrical chain, in which current is generated by means of the pedal drive and a generator connected to it, which is passed on to the drive motors or the battery.
  • the drive motor preferably drives both the lifting device and / or the adjusting device for adjusting the wheels of the load part.
  • the height-adjustable load pick-up is retracted under the load, for which the wheel units are first brought into their widely spaced loading position so that the load can be accommodated in between.
  • the load is then lifted so high by means of the load carrier that the wheel units can be retracted under the load and, if necessary, the load carrier into the driving position, so that the cargo bike in particular is no longer wider than the width of the load it is carrying.
  • the load is set down in the same way in reverse.
  • the driver part 2a of the chassis 2 essentially corresponds to that of a conventional bicycle - except for the dimensions of the frame parts - i.e. with a seat tube 25, at the upper end of which the saddle 3 is attached, and a down tube 26, which is connected to the lower end of the Seat tube 25 is firmly connected, is usually welded and rises obliquely upward in front.
  • control tube 22 is fastened, usually welded or soldered, through which the fork shaft 23 of the front fork 4 rotatable therein is passed, as well as a handlebar 5, preferably attached to the upper end of the fork shaft 23 in a rotationally fixed manner its ends on both sides each equipped with a handle 5a, 5b .
  • the saddle tube 25 is stiffened with respect to the substructure 26 via a cross strut, since there is preferably no top tube, but this could be present and is therefore not essential for the invention.
  • the seat post 27 which points diagonally downwards from the upper area of the seat strut 25, supports the joist 2a1 of the bicycle part 2a of the chassis or frame 2 , which also extends from the lower end, albeit to the rear, whereby the direction of the joist 2a and down tube viewed in the top view 26 define the longitudinal direction 10 of the cargo bike, which is also the direction of travel 10 when driving straight ahead.
  • the load part 2b of the chassis 2 which adjoins this bicycle part 2a of the chassis 2 to the rear, comprises on the one hand a central module 31, which in this case is box-shaped and runs in the transverse direction 11 approximately from the beam 2a1 to which it is attached to almost rises at the level of the saddle 3.
  • the lifting prongs 12a, b are each L-shaped with an upright leg that is guided vertically along the central unit 31 , and a support leg protruding from the lower end of this leg counter to the direction of travel to the rear, which is under a Load can be retracted, for example into the cavities provided for this on a pallet P, as in Figure 1c and the other drawings.
  • the variability of the distance between the lifting prongs 12a, b in the transverse direction 11 is used to adapt to different loads.
  • the load part 2b is supported against the ground by means of two wheel units 29a, b spaced apart in the transverse direction 11 , each of which has at least one wheel carrier 13 running in the longitudinal direction 10 , which in this case, as best shown in FIG Figure 1c and the following figures can be seen - an L-profile running in the longitudinal direction 10 has a vertically standing support leg 13a, to which the respective wheel 16a, b is usually attached, and an outwardly protruding load leg arranged at its upper end 13b, which extends above the wheel 16a or b over this outwards approximately to its outermost end in the transverse direction 11.
  • the two wheel units 29a, b are fastened with their front end to the central module 31, in particular on its underside, and can be moved along this - preferably in opposite synchronism - in the transverse direction 11 , preferably moved by means of an adjusting device 28, preferably driven by a motor.
  • the transverse movement can preferably take place by means of the lifting drive, which also causes the movement of the lifting device 30 , in that one and the same motor can move the lifting device 30 or the adjusting device 28 by switching.
  • the two wheels 16a, b spaced apart in the transverse direction 11 are preferably also driven by a motor, with each wheel 16a, b preferably having its own motor 15a, b is driven, and the two drive motors 15a, b can preferably be controlled independently of one another in terms of their speed.
  • the at least one drive motor 15 can be controlled by the driver by means of a speed sensor 7 arranged on the handlebar 5.
  • the entire cargo bike 1 can get by with just a single motor, if this can be switched to optionally apart from the drive also to actuate the lifting device 30 of the load carrier 12, such as the lifting prongs 12a, b , or the adjusting device 28 for transversely adjusting the wheel units 29a, b.
  • Separate motors 15a, b can, however, also be arranged directly on or in the wheel units 29a, b , for example as wheel hub motors or if the respective wheel 16a, b is formed at the end of a swing arm and the respective associated drive motor 15a, b is also arranged on the rocker, preferably on the pivot arm of the rocker.
  • Such a rocker can be sprung in a simple manner with respect to the wheel carrier 13 by means of springs or a torsion bar.
  • a load such as a Euro pallet P can be picked up without further aids as follows: First, according to the rear view of the Figure 2a the two wheel units 29a, b moved so far apart in the transverse direction 11 that the clear distance between them is greater than the width of the load P to be picked up, for example a pallet.
  • the two lifting prongs 12a, b are set to such a distance from one another - which is usually done manually, since the distance only rarely needs to be changed - that the load legs of the lifting prongs 12a, b into the free spaces in or under the load, in this
  • the lifting prongs 12a, b against the direction of travel 10 can be retracted by driving the cargo bike 1 backwards, for which the lifting prongs 12a, b must be lowered sufficiently deep, usually to a height just above the ground, which is usually only possible for both lifting prongs 12a, b together, that is, synchronously.
  • the width of the wheel units 29a, b, in particular the wheels 16a, b and the load legs of the wheel carrier, is outside the width of the box-shaped central module 31, the width of which corresponds to the maximum width of the load P that can be carried.
  • the triangular support elements shown in the direction of the longitudinal center, extend into the width area of the central module 31 and are guided on this.
  • the cargo part 2b and thus the cargo bike 1 overall is no longer wider than the width of the picked up pallet P and thus the width of the cargo bike 1 is minimized as much as possible, so that the cargo bike 1 then can be easily driven along cycle paths, which is in accordance with the wide loading position Figure 2a is no longer possible in most cases, and would often not be allowed because of the large width of the cargo wheel 1.
  • the load can be held by the lifting tines 12a, b at this height, ie floating above the wheel units 29a, b - which can of course be locked in their transverse position in the narrow driving position - are held according to Figure 2c or - to lower the center of gravity and relieve the lifting device 30 - be lowered by means of the lifting device 30 until the pallet P rests on the upper side of the two load legs 13b of the wheel carrier 13 according to Figure 2d and the lifting prongs 12a, b are relieved and no longer even have to be in contact with the load P.
  • a handlebar sensor 8 is arranged on the control tube 22 and measures the steering angle 9 of the handlebar 5 with respect to the chassis, that is to say in this case the driver part 2a of the chassis 2, that is to say as in FIG Figure 1a , b shown, the angle between the longitudinal direction 10 and the main plane of the front wheel 6.
  • the handlebar sensor 8 reports this steering angle 9 to the controller 20, which, depending on this, controls the speeds of the two drive motors 15a, b for the rear wheels 16a, b and thus their speed differently, usually selecting the speed of the wheel on the outside of the curve more quickly.
  • the entire driver part 2a can also be inclined relative to the load part 2b of the chassis 2 about the longitudinal direction 10 of the cargo bike, so that the driver part 2a can lean into the curve.
  • the generally horizontal beam 2a1 is rotatably mounted at its rear end as a storage point 24 in a pipe socket connected to it to the rear, which is part of the load part 2b of the chassis 2 is.
  • the angle of inclination 9 ′ between the vertical plane 21 ′ and the driver's part plane 2a ′ is measured by an inclination sensor 18 and reported to the controller 20 , which is preferably arranged at the bearing point 24 .
  • the controller 20 When controlling the speed of the two independent drive motors 15a, b for the two rear wheels 16a, b , the controller 20 also takes into account the angle of inclination 9 'in order to enable safe cornering, the cargo bike 1 preferably also having a speed sensor (not shown) and / or a speed sensor on the motors or wheels and / or a speed sensor on the front wheel 6.
  • the Figure 1b shows a side view of a solution with an additional pedal drive 19:
  • An electric generator 14 is arranged in a rotationally fixed manner, in particular coaxially with the bottom bracket axle.
  • the current generated by pedaling is fed to the at least one drive motor 15 and / or the battery 17 via electrical lines (not shown).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • Transportation (AREA)
  • Automatic Cycles, And Cycles In General (AREA)
  • Handcart (AREA)

Abstract

Um ein Lasten-Fahrrad (1) mit einem Chassis (2) auch im beladenen Zustand möglichst schmal auszubilden, ist das Lasten-Teil (2b) in der Breite veränderbar zwischen einer breiten Belade-Stellung, in der die Rad-Einheiten zum Aufladen der Last (P) seitlich neben der Last (P) nach hinten fahren, während Hub-Zinken (12a, b) unter die Last (P) einfahren, danach bei durch die Hub-Zinken angehobener Last (P) die Rad-Einheiten (29a, b) an dem Zentralmodul (31) des Lasten-Teiles (2b) unter dieses einfahren, sodass das Lasten-Teil (2b) und damit das Lasten-Rad (1) insgesamt nicht mehr breiter als die aufgesattelte Last (P) ist.In order to make a cargo bike (1) with a chassis (2) as narrow as possible even when loaded, the width of the cargo part (2b) can be changed between a wide loading position in which the wheel units are used to charge the Move the load (P) to the side next to the load (P) to the rear while lifting tines (12a, b) move under the load (P), then the wheel units (29a) with the load (P) raised by the lifting tines , b) move under the central module (31) of the load part (2b) so that the load part (2b) and thus the load wheel (1) is no longer wider than the saddled load (P).

Description

I. AnwendungsgebietI. Field of application

Die Erfindung betrifft Lasten-Fahrräder, um Lasten zu transportieren und damit auch entlang von Radwegen oder Fußwegen fahren so können.The invention relates to cargo bicycles for transporting loads and thus also being able to ride along cycle paths or footpaths.

II. Technischer HintergrundII. Technical background

Lasten-Fahrräder sind in unterschiedlichen Ausführungsformen bekannt:
Es sind einerseits einspurige Lasten-Fahrräder bekannt, bei denen jedoch die Tragfähigkeit sehr begrenzt ist.Cargo bikes are known in different designs:
On the one hand, single-track cargo bicycles are known, but in which the load capacity is very limited.

Es sind andererseits Lastenfahrräder bekannt, bei denen das Chassis, also der Rahmen, so gestaltet ist, dass der vordere Teil von der Sattelstrebe aus nach vorne, der Fahrerteil, konventionell gestaltet ist, also mit einem einzigen, lenkbaren Vorderrad, während der hintere Teil des Chassis, das Lasten-Teil, eine Ladeplattform trägt.On the other hand, cargo bikes are known in which the chassis, i.e. the frame, is designed in such a way that the front part of the saddle strut to the front, the driver's part, is conventionally designed, i.e. with a single, steerable front wheel, while the rear part of the Chassis, the load part, carries a loading platform.

Die Ladeplattform wird in der Regel von zwei nebeneinanderliegenden, meist neben der Ladeplattform nach oben aufragenden, Rädern abgestützt, was bewirkt, dass die Ladefläche nicht von allen Seiten frei zugänglich ist, und darüber hinaus, dass die Breite des Fahrzeuges deutlich breiter ist als die Breite der Ladefläche und der Last.The loading platform is usually supported by two wheels next to each other, mostly standing up next to the loading platform, which means that the loading area is not freely accessible from all sides and that the width of the vehicle is significantly wider than the width the loading area and the load.

Dies wirkt sich sehr negativ aus, wenn die Last selbst bereits relativ breit ist, beispielsweise eine 80 cm breite Europalette ist, und das Lastenfahrrad dennoch auf Radwegen benutzt werden soll.This has a very negative effect if the load itself is already relatively wide, for example an 80 cm wide Euro pallet, and the cargo bike is still to be used on cycle paths.

Die Ladefläche kann sich alternativ auch vor dem Fahrer befinden, welcher entweder das dritte Rad lenkt oder bei einer vorne liegenden Ladeplattform auch die beiden Räder an der Ladeplattform.Alternatively, the loading area can also be located in front of the driver, who either steers the third wheel or, if the loading platform is at the front, also the two wheels on the loading platform.

Da der Trend bei Lasten-Fahrrädern zu immer größeren Nutzlasten geht und insbesondere beispielsweise eine Euro-Palette auf der Ladeplattform Platz finden soll, sind die bisher angewandten Bauformen hinsichtlich Stabilität, Lenkbarkeit und auch Komfort nicht mehr ausreichend, obwohl es bereits bekannt ist, den Antrieb unterstützt oder ausschließlich durch Elektro-Motoren zu realisieren.Since the trend for cargo bicycles is towards ever larger payloads and, in particular, for example, a euro pallet should find space on the loading platform, the designs used so far in terms of stability, maneuverability and comfort are no longer sufficient, although it is already known, the drive supported or realized exclusively by electric motors.

Ein weiteres Problem besteht deshalb darin, wie eine so große Last wie etwa eine beladene Euro-Palette - sofern kein Gabelstapler vorhanden ist - auf die Ladefläche des Lasten-Fahrrades gebracht werden kann und auch wieder abgeladen werden kann.Another problem is how such a large load as a loaded Euro pallet - if there is no forklift truck available - can be brought onto the loading area of the cargo bike and can also be unloaded again.

III. Darstellung der ErfindungIII. Presentation of the invention a) Technische Aufgabea) Technical task

Es ist daher die Aufgabe gemäß der Erfindung, ein einfach herzustellendes, auch unter hoher Beladung sicher fahrbares und entsprechend stabiles Lasten-Fahrrad mit einem Elektro-Antrieb zur Verfügung zu stellen, welches nicht breiter ist als die Breite der zu transportierenden Last und bei dem das Aufnehmen der Last nicht manuell erfolgen muss.It is therefore the object of the invention to provide a cargo bike with an electric drive that is easy to manufacture, can be safely driven even under heavy loads and is correspondingly stable, which is not wider than the width of the load to be transported and in which the Picking up the load does not have to be done manually.

b) Lösung der Aufgabeb) Solution of the task

Diese Aufgabe wird durch die Merkmale des Anspruchs 1 gelöst. Vorteilhafte Ausführungsformen ergeben sich aus den Unteransprüchen.This object is achieved by the features of claim 1 . Advantageous embodiments emerge from the subclaims.

Ein Lastenrad besteht üblicherweise aus einem Fahrerteil, welches den Sattel für den Fahrer und zumindest den schwenkbaren Lenker umfass, mit dem er das Lastenrad lenkt, sowie ein Lastenteil, welches einen Ladungsträger und zwei in Querrichtung zur Fahrtrichtung beabstandete Radeinheiten mit je einem Rad aufweist. Für die elektrische Unterstützung ist wenigstens eines der Räder mit einem Fahr-Motor wirkverbunden.A cargo bike usually consists of a driver part, which includes the saddle for the driver and at least the swiveling handlebar with which he steers the cargo bike, as well as a cargo part which has a load carrier and two wheel units with one wheel each, spaced transversely to the direction of travel. For the electrical support, at least one of the wheels is operatively connected to a drive motor.

Dabei kann sich der Lastenteil vorne oder hinten befinden, bei einem vorne angeordneten Lastenteil kann das einzelne Rad des Fahrradteiles lenkbar sein oder auch die beiden Räder am Lastenteil.The load part can be located at the front or the rear, with a load part arranged at the front, the individual wheel of the bicycle part can be steerable or the two wheels on the load part.

Erfindungsgemäß besitzt das Lastenrad einerseits eine Verstell-Vorrichtung, um die beiden in Querrichtung beabstandeten Räder des Lastenteiles zwischen einer Lade-Stellung mit geringem Abstand und einer Fahr-Stellung mit größerem Abstand zu verstellen, sowie eine Hubvorrichtung mit einem anhebbaren Ladungsträger, der unter die Last eingefahren werden kann und diese anheben kann. According to the invention , the cargo bike has on the one hand an adjustment device to adjust the two transversely spaced wheels of the load part between a loading position with a small distance and a driving position with a greater distance, and a lifting device with a liftable load carrier that is under the load can be retracted and this can be lifted.

Dadurch können zwei Probleme gleichzeitig gelöst werden:
Zum einen kann das Aufladen der Last mittels der Hubvorrichtung auf einfache Art und Weise durchgeführt werden, auch wenn es sich um eine große und schwere, einstückige Last wie etwa eine beladene Euro-Palette handelt.This can solve two problems at the same time:
On the one hand, the loading of the load by means of the lifting device can be carried out in a simple manner, even if it is a large and heavy, one-piece load such as a loaded Euro pallet.

Zum anderen können die beiden Räder des Lastenteiles nach entsprechendem Anheben der Last soweit gegeneinander zur Mitte verlagert werden, dass sie sich unter der Last befinden und vorzugsweise seitlich auch nicht über die Last vorstehen, sodass die maximale Breite des Lastenrades in der Fahr-Stellung durch die vorgegebene maximale Breite der Last, meist eine Euro-Palette, nicht hinausgeht.On the other hand, after lifting the load accordingly, the two wheels of the load part can be shifted towards each other towards the center so that they are under the load and preferably do not protrude laterally over the load, so that the maximum width of the load bike in the driving position by the specified maximum width of the load, usually a euro pallet, does not exceed.

Zum Laden werden dagegen die beiden Räder so weit auseinandergefahren, dass die Last dazwischen eingefahren werden kann und von der Hubvorrichtung ergriffen werden kann.For loading, however, the two wheels are moved so far apart that the load can be retracted between them and can be gripped by the lifting device.

Vorzugsweise besteht der anhebbare Ladungsträger der Hubvorrichtung deshalb aus zwei - in ihrem Querabstand meist zueinander einstellbaren - Hubzinken, die durch entsprechendes Verfahren des gesamten Lastenrades in die Freiräume unter der Palette eingefahren werden können.The liftable load carrier of the lifting device therefore preferably consists of two lifting prongs - usually adjustable in their transverse spacing from one another - which can be moved into the free spaces under the pallet by moving the entire cargo bike accordingly.

Anschließend werden die Hubzinken von der Hubvorrichtung hochgefahren bis über die Höhe der Radeinheiten des Lastenteiles und die Radeinheiten zur Mitte hin unter den angehobenen Ladungsträger in Form der Hubzinken und die Last eingefahren. Als Fahr-Stellung kann die Last seitlich auf den beiden darunter befindlichen Radeinheiten, insbesondere den über jedem der Räder vorhandenen Rad-Abdeckungen, abgelegt werden, sodass das Gewicht der Last nicht mehr vollständig auf den Hubzinken lastet.The lifting tines are then raised by the lifting device to above the height of the wheel units of the load part and the wheel units are retracted towards the center under the lifted load carrier in the form of the lifting tines and the load. As the driving position, the load can be placed laterally on the two wheel units located underneath, in particular the wheel covers provided above each of the wheels, so that the weight of the load no longer completely rests on the lifting tines.

Alternativ kann auch während der Fahrt die Last nur auf den Hubzinken ruhen und mit Abstand über den beiden Rädern des Lastenteiles schweben, wodurch der Schwerpunkt etwas höher wird. Dann ist der Ladungsträger wie etwa die Hubzinken in der Höhenlage über den Radeinheiten fixierbar, vorzugsweise formschlüssig verriegelbar, um ein unerwünschtes Absinken auf die Radeinheiten - die dann nicht unbedingt eine Radabdeckung besitzen müssen - während des Fahrens zu vermeiden.Alternatively, the load can only rest on the lifting tines while driving and hover at a distance above the two wheels of the load part, whereby the center of gravity is slightly higher. Then the load carrier, such as the lifting tines, can be fixed at the height above the wheel units, preferably locked in a form-fitting manner, in order to avoid undesirable lowering onto the wheel units - which then do not necessarily have to have a wheel cover - while driving.

Vorzugsweise sind die beiden quer beabstandeten Radeinheiten am Chassis des Lastenteiles in Querrichtung verlagerbar, und ebenso ist der in der Höhe anhebbare Ladungsträger am Chassis des Lastenteiles in der Höhe geführt. Das Chassis des Lastenteiles nimmt meist auch die Batterien für den elektrisch angetriebenen Fahr-Motor auf.Preferably, the two transversely spaced wheel units on the chassis of the load part can be displaced in the transverse direction, and the load carrier that can be raised in height is likewise guided in height on the chassis of the load part. The chassis of the load part usually also houses the batteries for the electrically powered drive motor.

Die Radeinheiten können entweder linear in Querrichtung verlagerbar sein oder um eine in Fahrtrichtung verlaufende Schwenkachse verschwenkbar sein von einer Stellung unter der Last in eine Stellung außerhalb und neben der Last.The wheel units can either be linearly displaceable in the transverse direction or can be pivoted about a pivot axis running in the direction of travel from a position under the load to a position outside and next to the load.

Die Radeinheiten können entweder am Chassis des Lastenteiles oder auch an dem anhebbaren Ladungsträger befestigt sein. Das Befestigen am Ladungsträger hat den Vorteil, dass das nach innen Schwenken bei so hoch angehobenem Ladungsträger erfolgen kann, dass die Räder beim nach innen Schwenken noch keinen Kontakt zum Untergrund haben, und danach erst der Ladungsträger abgesenkt wird.The wheel units can either be attached to the chassis of the load part or to the load carrier that can be lifted. Fastening it to the load carrier has the advantage that the inward pivoting can take place with the load carrier raised so high that the wheels do not yet have any contact with the ground when the load carrier is pivoted inward, and the load carrier is only then lowered.

Bei einer Befestigung am Chassis des Lastenteiles haben die Räder immer Kontakt zum Untergrund oder zumindest vor dem Erreichen ihrer Fahrstellung, sodass das Verstellen in die Fahr-Stellung nur bei fahrendem Lastenrad erfolgen kann, zumindest gegen Ende der Verstell-Bewegung.When attached to the chassis of the cargo part, the wheels are always in contact with the ground or at least before they reach their driving position, so that the adjustment to the driving position can only take place when the cargo bike is moving, at least towards the end of the adjustment movement.

In der Regel, vor allem wenn das Lastenrad ausschließlich elektrisch angetrieben wird, befindet sich am Fahrerteil ein Geschwindigkeitsgeber, den der Fahrer zum Einstellen der Fahrgeschwindigkeit betätigen kann.As a rule, especially if the cargo bike is only powered electrically, there is a speed sensor on the driver's part that the driver can operate to set the driving speed.

Das Lastenrad kann auch über einen zusätzlichen Tretantrieb verfügen, der bewirkt, dass eine elektrische Antriebsunterstützung in einem vorgegebenen Verhältnis zu der über den Pedalantrieb eingebrachten Antriebskraft zugesteuert wird, sodass kein Geschwindigkeits-Geber am Fahrradteil vorhanden ist, sondern höchstens ein Wählschalter für das Maß der elektrischen Unterstützung.The cargo bike can also have an additional pedal drive, which has the effect that an electrical drive support is added in a predetermined ratio to the drive force brought in via the pedal drive, so that there is no speed sensor on the bicycle part, but at most a selector switch for the amount of electrical Support.

Aus Traktionsgründen sind vorzugsweise die beiden Räder des Lastenteiles elektrisch angetrieben, und vorzugsweise über zwei unabhängig voneinander ansteuerbare Elektromotoren, sodass deren Drehzahl bei Kurvenfahrt so angepasst werden kann, dass das kurvenäußere Rad schneller dreht.For reasons of traction, the two wheels of the load part are preferably electrically driven, and preferably via two independently controllable electric motors, so that their speed when cornering can be adjusted so that the outside wheel rotates faster.

Zu diesem Zweck kann an der Gabel des Lastenrades ein erster Sensor vorhanden sein, der deren Lenker-Einschlagwinkel detektiert und dies signaltechnisch an die Steuerung meldet.For this purpose, a first sensor can be present on the fork of the cargo bike, which detects the steering angle of the handlebar and reports this to the controller by means of a signal.

Zusätzlich kann das Lastenrad so gestaltet sein, dass der Fahrerteil um eine in Fahrtrichtung verlaufende, etwa horizontal liegende Achse gegenüber dem Lastenteil kippbar ist für Kurvenfahrt.In addition, the cargo bike can be designed in such a way that the driver's part can be tilted for cornering about an approximately horizontal axis running in the direction of travel relative to the cargo part.

Vorzugsweise ist dann ein Unterzug des Fahrerteiles kippbar um diese Kippachse am Lastenteil befestigt und ein dortiger zweiter Sensor detektiert den Kippwinkel, der - zusätzlich oder statt - des Lenker-Einschlagwinkels ebenfalls der Steuerung zur Verfügung gestellt wird zur Steuerung der Drehzahlen der beiden Motore bei Kurvenfahrt.A beam of the driver's part is then preferably attached to the load part so that it can be tilted about this tilting axis and a second sensor there detects the tilting angle, which - in addition to or instead of - the steering angle is also made available to the controller to control the speeds of the two motors when cornering.

Vorzugsweise ist das Fahrerteil vor dem Lastenteil angeordnet, und die Hubzinken stehen vom Chassis des Lastenteiles nach hinten ab, sodass zum Einfahren unter die Last das Lastenfahrrad rückwärts bewegt werden muss.The driver part is preferably arranged in front of the load part, and the lifting prongs protrude from the chassis of the load part to the rear, so that the cargo bike has to be moved backwards in order to move under the load.

Die Räder des Lastenteiles sind vorzugsweise gegenüber dem Chassis des Lastenteils gefedert, beispielsweise indem sie jeweils an einer Schwinge befestigt sind, die beabstandet zur Radachse um eine Schwingen-Achse am Lastenteil verschwenkbar ist.The wheels of the load part are preferably sprung with respect to the chassis of the load part, for example by being attached to a rocker arm, which can be pivoted about a rocker axis on the load part at a distance from the wheel axis.

Dabei kann die Federung durch einen Torsionskörper erfolgen, der insbesondere um die Schwingen-Achse herum angeordnet sein kann, um die Schwinge in die Normallage zurück zu schwenken.In this case, the suspension can be provided by a torsion body, which can in particular be arranged around the rocker axis in order to pivot the rocker back into the normal position.

Die Fahrbremse kann zumindest teilweise dadurch zur Verfügung gestellt werden, dass der elektrische Fahr-Motor ohne Stromzufuhr als Generator wirkt und dadurch eine Verzögerungs-Wirkung entfaltet, die insbesondere einstellbar ist in ihrer Rekuperationswirkung.The driving brake can at least partially be made available in that the electric driving motor acts as a generator without a power supply and thus develops a deceleration effect, which is in particular adjustable in its recuperation effect.

Die Feststellbremse ist vorzugsweise eine mechanische, kraftschlüssige Bremse oder auch formschlüssige Bremse, beispielsweise indem wie bekannt Bremsbacken gegen die beiden Seiten einer mit dem entsprechenden Rad mitdrehenden Bremsscheibe anpressbar sind.The parking brake is preferably a mechanical, non-positive brake or also a positive brake, for example in that, as is known, brake shoes can be pressed against the two sides of a brake disc that rotates with the corresponding wheel.

Die Bremselemente sind dann in die bremsende Stellung vorgespannt und nur elektrisch mittels Strom aus der Batterie oder dem als Generator wirkenden Elektromotor in die nicht bremsende Stellung bewegt und gehalten, sodass im stromlosen Zustand die Feststellbremse aktiv ist.The braking elements are then preloaded into the braking position and only moved and held electrically in the non-braking position by means of electricity from the battery or the electric motor acting as a generator, so that the parking brake is active in the de-energized state.

Sofern ein zusätzlicher Tretantrieb vorhanden ist, ist dieser vorzugsweise mit einem der Räder nicht mechanisch verbunden, sondern über eine sogenannte elektrische Kette, indem mittels des Tretantriebes und eines damit wirkverbundenen Generators Strom erzeugt wird, der an die Fahr-Motoren oder die Batterie weitergeleitet wird.If an additional pedal drive is available, this is preferably not mechanically connected to one of the wheels, but via a so-called electrical chain, in which current is generated by means of the pedal drive and a generator connected to it, which is passed on to the drive motors or the battery.

Vorzugsweise treibt der Fahr-Motor sowohl die Hubvorrichtung an und/oder die VerstellEinrichtung zum Verstellen der Räder des Lastenteiles.The drive motor preferably drives both the lifting device and / or the adjusting device for adjusting the wheels of the load part.

Dann ist ein Umschalter vorhanden, mit dem man einstellt, was davon der Fahr-Motor momentan antreiben soll.Then there is a toggle switch with which you can set which of these the drive motor is to drive at the moment.

Hinsichtlich der Vorgehensweise zum Betrieb eines solchen Lastenrades wird zum Aufnehmen einer Last vom Untergrund mittels Bewegen des Lastenrades die höhenbewegliche Lastaufnahme unter die Last eingefahren, wofür vorher die Radeinheiten in ihre weit zueinander beabstandete Lade-Stellung verbracht werden, damit die Last dazwischen Platz findet.With regard to the procedure for operating such a cargo bike, to pick up a load from the ground by moving the cargo bike, the height-adjustable load pick-up is retracted under the load, for which the wheel units are first brought into their widely spaced loading position so that the load can be accommodated in between.

Anschließend wird die Last mittels des Ladungsträgers so hoch gehoben, dass die Radeinheiten unter die Last und ggfs. auch den Ladungsträger in die Fahr-Stellung eingefahren werden können, sodass insbesondere das Lastenrad nicht mehr breiter ist als die Breite der von ihm getragenen Last.The load is then lifted so high by means of the load carrier that the wheel units can be retracted under the load and, if necessary, the load carrier into the driving position, so that the cargo bike in particular is no longer wider than the width of the load it is carrying.

Das Absetzen der Last erfolgt analog umgekehrt.The load is set down in the same way in reverse.

c) Ausführungsbeispielec) Embodiments

Ausführungsformen gemäß der Erfindung sind im Folgenden anhand der Figuren beispielhaft näher beschrieben. Es zeigen:

Figur 1a, b:
eine perspektivische Ansicht und eine Seitenansicht des Lasten-Fahrrades ohne Last,
Figur 1c:
eine perspektivische Ansicht fast von hinten auf das Lasten-Fahrrad gemäß Figur 1a, b, mit Sattel, Lenker und einer leeren Europalette als Last,
Figur 1d:
eine Detailvergrößerung zu Figur 1c,
Figuren 2a - d:
in einer Heckansicht das Lasten-Fahrrad gemäß Figur 1a mit Last auf der Ladeplattform, in unterschiedlichen Funktionszuständen.
Embodiments according to the invention are described in more detail below by way of example with reference to the figures. Show it:
Figure 1a, b:
a perspective view and a side view of the cargo bike without a load,
Figure 1c:
a perspective view almost from behind of the cargo bike according to Figure 1a , b , with saddle, handlebars and an empty Euro pallet as a load,
Figure 1d:
an enlarged detail too Figure 1c ,
Figures 2a - d:
in a rear view of the cargo bike according to Figure 1a with load on the loading platform, in different functional states.

Die Figuren 1a , b zeigen am besten den Grundaufbau des erfindungsgemäßen Lasten-Fahrrades:
Der Fahrer-Teil 2a des Chassis 2 entspricht im Wesentlichen dem eines konventionellen Fahrrades - bis auf die Dimensionierung der Rahmenteile - also mit einen Sattelrohr 25, an dessen oberen Ende der Sattel 3 befestigt ist, sowie einem Unterrohr 26, welches mit dem unteren Ende des Sattelrohres 25 fest verbunden, in der Regel verschweißt ist und schräg nach oben vorne ansteigt. Am oberen Ende des Unterrohres 26 ist das Steuerrohr 22 befestigt, in der Regel verschweißt oder verlötet, durch welches der Gabelschaft 23 der darin drehbaren Vorderrad-Gabel 4 hindurch geführt ist, sowie einem am oberen Ende des Gabelschaftes 23 drehfest befestigten Lenker 5, vorzugsweise an seinen beidseitigen Enden jeweils mit einem Handgriff 5a, 5b ausgestattet.the Figures 1a , b best show the basic structure of the cargo bike according to the invention:
The driver part 2a of the chassis 2 essentially corresponds to that of a conventional bicycle - except for the dimensions of the frame parts - i.e. with a seat tube 25, at the upper end of which the saddle 3 is attached, and a down tube 26, which is connected to the lower end of the Seat tube 25 is firmly connected, is usually welded and rises obliquely upward in front. At the upper end of the down tube 26 , the control tube 22 is fastened, usually welded or soldered, through which the fork shaft 23 of the front fork 4 rotatable therein is passed, as well as a handlebar 5, preferably attached to the upper end of the fork shaft 23 in a rotationally fixed manner its ends on both sides each equipped with a handle 5a, 5b .

Das Sattelrohr 25 ist über eine Querstrebe gegenüber dem Unterbau 26 versteift, da vorzugsweise kein Oberrohr vorhanden ist, was aber vorhanden sein könnte und deshalb für die Erfindung unwesentlich ist.The saddle tube 25 is stiffened with respect to the substructure 26 via a cross strut, since there is preferably no top tube, but this could be present and is therefore not essential for the invention.

Die vom oberen Bereich der Sattelstrebe 25 schräg nach hinten unten weisende Sattelstütze 27 stützt den ebenfalls vom unteren Ende, allerdings nach hinten verlaufenden, Unterzug 2a1 des Fahrradteils 2a des Chassis oder Rahmen 2 ab, wobei die in der Aufsicht betrachtete Verlaufsrichtung von Unterzug 2a und Unterrohr 26 die Längsrichtung 10 des Lasten-Fahrrades definieren, die bei Geradeausfahrt auch die Fahrtrichtung 10 ist.The seat post 27 , which points diagonally downwards from the upper area of the seat strut 25, supports the joist 2a1 of the bicycle part 2a of the chassis or frame 2 , which also extends from the lower end, albeit to the rear, whereby the direction of the joist 2a and down tube viewed in the top view 26 define the longitudinal direction 10 of the cargo bike, which is also the direction of travel 10 when driving straight ahead.

Der sich an dieses Fahrradteil 2a des Chassis 2 nach hinten anschließende Lasten-Teil 2b des Chassis 2 umfasst zum einen ein Zentralmodul 31, welches in diesem Fall kastenförmig ist und in Querrichtung 11 verlaufend etwa vom Unterzug 2a1, an dem es befestigt ist, bis fast auf Höhe des Sattels 3 aufragt. The load part 2b of the chassis 2 , which adjoins this bicycle part 2a of the chassis 2 to the rear, comprises on the one hand a central module 31, which in this case is box-shaped and runs in the transverse direction 11 approximately from the beam 2a1 to which it is attached to almost rises at the level of the saddle 3.

An der Rückseite des Zentralmoduls 31 sind zwei in Querrichtung 11 in einem einstellbaren Abstand zueinander angeordnete Hub-Zinken 12a, b gemeinsam in der Höhe verfahrbar mittels eines im Inneren dem Zentralmodul 31 angeordneten, elektrischen Hub-Antriebes für diese Hubvorrichtung 30. Auch die diesen versorgende Batterie 17 ist in dem Zentralmodul 31 untergebracht.On the rear of the central module 31 , two lifting prongs 12a, b arranged in the transverse direction 11 at an adjustable distance from one another can be moved together in height arranged by means of an inside the central module 31, electric drive hub 30 for this lifting device also serving this battery 17 is housed in the central module 31st

Die Hubzinken 12a, b sind jeweils L-förmig gestaltet mit einem aufrechten Schenkel, der entlang der Zentral-Einheit 31 in der Höhe beweglich geführt ist, und einem vom unteren Ende dieses Schenkels entgegen der Fahrtrichtung nach hinten abragenden Trag-Schenkel, der unter eine Last eingefahren werden kann, etwa in die dafür vorgesehenen Hohlräume einer Palette P, wie in Figur 1c und den weiteren Zeichnungen dargestellt.The lifting prongs 12a, b are each L-shaped with an upright leg that is guided vertically along the central unit 31 , and a support leg protruding from the lower end of this leg counter to the direction of travel to the rear, which is under a Load can be retracted, for example into the cavities provided for this on a pallet P, as in Figure 1c and the other drawings.

Die Veränderbarkeit des Abstandes der Hubzinken 12a, b in Querrichtung 11 dient der Anpassung an unterschiedliche Lasten.The variability of the distance between the lifting prongs 12a, b in the transverse direction 11 is used to adapt to different loads.

Das Lasten-Teil 2b stützt sich gegenüber dem Untergrund ab mittels zweier in Querrichtung 11 beabstandeter Rad-Einheiten 29a, b, von denen jede zumindest einen in Längsrichtung 10 verlaufenden Rad-Träger 13 aufweist, der in diesem Fall, wie am besten in Figur 1c und den nachfolgenden Figuren ersichtlich - ein in Längsrichtung 10 verlaufendes L-Profil ist mit einem vertikal stehenden Träger-Schenkel 13a, an dem meist das jeweilige Rad 16a, b befestigt ist, und einem an dessen oberen Ende angeordneten, nach außen abragenden Last-Schenkel 13b, der sich oberhalb des Rades 16a bzw. b über dieses weg nach außen erstreckt etwa bis zu dessen äußersten Ende in Querrichtung 11. The load part 2b is supported against the ground by means of two wheel units 29a, b spaced apart in the transverse direction 11 , each of which has at least one wheel carrier 13 running in the longitudinal direction 10 , which in this case, as best shown in FIG Figure 1c and the following figures can be seen - an L-profile running in the longitudinal direction 10 has a vertically standing support leg 13a, to which the respective wheel 16a, b is usually attached, and an outwardly protruding load leg arranged at its upper end 13b, which extends above the wheel 16a or b over this outwards approximately to its outermost end in the transverse direction 11.

Die beiden Rad-Einheiten 29a, b sind mit ihrem vorderen Ende an dem Zentralmodul 31, insbesondere an dessen Unterseite, befestigt und entlang diesem - vorzugsweise gegensynchron - in Querrichtung 11 bewegbar, vorzugsweise motorisch angetrieben bewegbar mittels einer Verstellvorrichtung 28. The two wheel units 29a, b are fastened with their front end to the central module 31, in particular on its underside, and can be moved along this - preferably in opposite synchronism - in the transverse direction 11 , preferably moved by means of an adjusting device 28, preferably driven by a motor.

Vorzugsweise kann die Querbewegung dabei mittels des Hub-Antriebes erfolgen, der auch die Bewegung der Hubvorrichtung 30 bewirkt, indem ein und derselbe Motor durch Umschalten die Hubvorrichtung 30 oder die Verstellvorrichtung 28 bewegen kann.The transverse movement can preferably take place by means of the lifting drive, which also causes the movement of the lifting device 30 , in that one and the same motor can move the lifting device 30 or the adjusting device 28 by switching.

Vorzugsweise sind die beiden in Querrichtung 11 beabstandeten Räder 16a, b ebenfalls motorisch angetrieben, wobei vorzugsweise jedes Rad 16a, b von einen eigenen Motor 15a, b angetrieben wird, und die beiden Fahr-Motore 15a, b vorzugsweise in ihrer Drehzahl unabhängig voneinander gesteuert werden können. Der wenigstens eine Fahr-Motor 15 kann vom Fahrer mittels eines am Lenker 5 angeordneten Geschwindigkeits-Gebers 7 angesteuert werden. The two wheels 16a, b spaced apart in the transverse direction 11 are preferably also driven by a motor, with each wheel 16a, b preferably having its own motor 15a, b is driven, and the two drive motors 15a, b can preferably be controlled independently of one another in terms of their speed. The at least one drive motor 15 can be controlled by the driver by means of a speed sensor 7 arranged on the handlebar 5.

Diese beiden Fahr-Motore 15a, b könnten auch innerhalb des kastenförmigen Zentralmoduls 31 angeordnet sein und von dort aus das jeweilige Rad antreiben.These two drive motors 15a, b could also be arranged within the box-shaped central module 31 and drive the respective wheel from there.

Falls die beiden Räder 16a, b von einem gemeinsamen Fahr-Motor angetrieben werden, und dieser in dem Zentralmodul 31 untergebracht ist, kann das gesamte Lasten-Fahrrad 1 mit nur einem einzigen Motor auskommen, wenn dieser umschaltbar ist um außer dem Fahr-Antrieb wahlweise auch die Hub-Vorrichtung 30 des Ladungsträgers 12, etwa der Hub-Zinken 12a, b zu betätigen oder die Verstellvorrichtung 28 zur Querverstellung der Rad-Einheiten 29a, b. If the two wheels 16a, b are driven by a common drive motor, and this is housed in the central module 31 , the entire cargo bike 1 can get by with just a single motor, if this can be switched to optionally apart from the drive also to actuate the lifting device 30 of the load carrier 12, such as the lifting prongs 12a, b , or the adjusting device 28 for transversely adjusting the wheel units 29a, b.

Getrennte Motore 15a, b können jedoch auch direkt an oder in den Rad-Einheiten 29a, b angeordnet werden, beispielsweise als Radnaben-Motore oder wenn zum Zwecke der Federung das jeweilige Rad 16a, b am Ende eines Schwingen-Armes ausgebildet ist und der jeweilige zugeordnete Fahr-Motor 15a, b ebenfalls an der Schwinge, vorzugsweise auf dem Schwenk-Arm der Schwinge, angeordnet ist.Separate motors 15a, b can, however, also be arranged directly on or in the wheel units 29a, b , for example as wheel hub motors or if the respective wheel 16a, b is formed at the end of a swing arm and the respective associated drive motor 15a, b is also arranged on the rocker, preferably on the pivot arm of the rocker.

Eine solche Schwinge kann mittels Federn oder Torsions-Stab auf einfache Art und Weise gegenüber dem Rad-Träger 13 gefedert sein.Such a rocker can be sprung in a simple manner with respect to the wheel carrier 13 by means of springs or a torsion bar.

Mit Hilfe der anhebbaren und absenkbaren Hubzinken 12a, b - die auch zu einem einzigen Ladungsträger 12 zusammengefasst sein können - und der auseinanderfahrbaren und gegeneinander annäherbaren Rad-Einheiten 29a, b kann gemäß der nachfolgenden Figuren 2a - 2d ohne weitere Hilfsmittel eine Last wie etwa eine Euro-Palette P wie folgt aufgenommen werden:
Zunächst werden gemäß der Heckansicht der Figur 2a die beiden Rad-Einheiten 29a, b in Querrichtung 11 so weit auseinandergefahren, dass der lichte Abstand dazwischen größer ist als die Breite der aufzunehmenden Last P, z.B. einer Palette. With the aid of the lifting prongs 12a, b which can be raised and lowered - which can also be combined into a single load carrier 12 - and the wheel units 29a, b which can be moved apart and approached one another, according to the following Figures 2a - 2d A load such as a Euro pallet P can be picked up without further aids as follows:
First, according to the rear view of the Figure 2a the two wheel units 29a, b moved so far apart in the transverse direction 11 that the clear distance between them is greater than the width of the load P to be picked up, for example a pallet.

Ferner werden die beiden Hubzinken 12a, b auf einen solchen Abstand zueinander eingestellt - was meist manuell erfolgt, da der Abstand nur selten geändert werden muss - dass die Last-Schenkel der Hubzinken 12a, b in die Freiräume in oder unter der Last, in diesem Fall einer Euro-Palette P, entgegen der Fahrtrichtung 10 eingefahren werden können durch nach hinten fahren des Lasten-Fahrrades 1, wofür die Hubzinken 12a, b ausreichend tief nach unten, in der Regel auf eine Höhe knapp über dem Untergrund abgesenkt werden muss, was in aller Regel nur für beide Hubzinken 12a, b gemeinsam, also synchron, möglich ist.Furthermore, the two lifting prongs 12a, b are set to such a distance from one another - which is usually done manually, since the distance only rarely needs to be changed - that the load legs of the lifting prongs 12a, b into the free spaces in or under the load, in this In the case of a euro pallet P, against the direction of travel 10 can be retracted by driving the cargo bike 1 backwards, for which the lifting prongs 12a, b must be lowered sufficiently deep, usually to a height just above the ground, which is usually only possible for both lifting prongs 12a, b together, that is, synchronously.

In dieser in Figur 2a links dargestellten Stellung wird das Lasten-Fahrrad 1 nach hinten und dadurch die Last-Zinken unter die Last eingefahren, wobei die Rad-Einheiten 29a, b seitlich neben der Last P nach hinten fahren.In this in Figure 2a The position shown on the left, the cargo bike 1 is retracted to the rear and thereby the load tines under the load, the wheel units 29a, b move laterally next to the load P to the rear.

In dieser Ausgangsstellung gemäß Figur 2a befinden sich die Rad-Einheiten 29a, b, insbesondere die Räder 16a, b und die Last-Schenkel des Rad-Trägers, in der Breite außerhalb der Breite des kastenförmigen Zentralmoduls 31, dessen Breite der maximalen Breite der aufnehmbaren Last P entspricht.In this starting position according to Figure 2a the width of the wheel units 29a, b, in particular the wheels 16a, b and the load legs of the wheel carrier, is outside the width of the box-shaped central module 31, the width of which corresponds to the maximum width of the load P that can be carried.

Deshalb reichen vom vorderen Ende der Rad-Einheiten 29a, b die dreieckig dargestellten Tragelemente Richtung Längsmitte in den Breitenbereich des Zentralmoduls 31 hinein und sind an diesem geführt.Therefore, from the front end of the wheel units 29a, b, the triangular support elements, shown in the direction of the longitudinal center, extend into the width area of the central module 31 and are guided on this.

Anschließend werden durch Betätigen der Hubvorrichtung 30 die Hubzinken 12a, b an dem Zentralmodul 31 nach oben verfahren, sodass zunächst die Last-Schenkel die Unterseite der Last P kontaktieren und diese anzuheben beginnt - wie in Figur 2a in der rechten Hälfte dargestellt - und durch weiteres Anheben die Palette P gemäß Figur 2b so weit angehoben wird, bis sich ihre Unterseite auf einer Höhen-Lage oberhalb des oberen Endes der Rad-Einheiten 29a, b, insbesondere der Oberseite deren Last-Schenkeln 13b, befindet.Then, by actuating the lifting device 30, the lifting prongs 12a, b on the central module 31 are moved upwards so that the load legs initially contact the underside of the load P and it begins to lift - as in FIG Figure 2a shown in the right half - and by further lifting the pallet P according to Figure 2b is raised until its underside is at a height above the upper end of the wheel units 29a, b, in particular the upper side of their load legs 13b .

Dann können die Rad-Einheiten gemäß Figur 2c zunehmend zur Längsmitte 10" hin eingefahren werden - wie in Figur 2c in der linken Hälfte dargestellt - bis sich die beiden Rad-Einheiten 29a, b nicht mehr über die in der Aufsicht betrachteten Längs-Außenkanten der Last, etwa der Palette P vorstehen, wie in Figur 2c rechte Hälfte dargestellt.Then the wheel units can according to Figure 2c are increasingly retracted towards the longitudinal center 10 " - as in Figure 2c shown in the left half - until the two wheel units 29a, b no longer protrude beyond the longitudinal outer edges of the load viewed from above, such as the pallet P , as in FIG Figure 2c right half shown.

In dieser Fahr-Stellung ist das Lasten-Teil 2b und damit das Lasten-Rad 1 insgesamt nicht mehr breiter als die Breite der aufgenommenen Palette P und damit die Breite des Lasten-Rades 1 soweit als möglich minimiert, sodass das Lasten-Fahrrad 1 dann problemlos entlang von Radwegen gefahren werden kann, was in der breiten Belade-Stellung gemäß Figur 2a in den meisten Fällen nicht mehr möglich ist, häufig auch nicht erlaubt wäre wegen zu großer Breite des Lasten-Rades 1. In this driving position, the cargo part 2b and thus the cargo bike 1 overall is no longer wider than the width of the picked up pallet P and thus the width of the cargo bike 1 is minimized as much as possible, so that the cargo bike 1 then can be easily driven along cycle paths, which is in accordance with the wide loading position Figure 2a is no longer possible in most cases, and would often not be allowed because of the large width of the cargo wheel 1.

Um die Last P zu transportieren kann die Last von den Hubzinken 12a, b in dieser Höhe, also schwebend über den Rad-Einheiten 29a, b - die in ihrer Querposition in der schmalen Fahr-Stellung natürlich verriegelt werden können - gehalten werden gemäß Figur 2c oder-zur Absenkung des Schwerpunktes und Entlastung der Hubvorrichtung 30 - mittels der Hubvorrichtung 30 abgesenkt werden, bis die Palette P auf der Oberseite der beiden Last-Schenkel 13b der Rad-Träger 13 aufsitzt gemäß Figur 2d und die Hubzinken 12a, b entlastet sind und nicht einmal mehr in Kontakt mit der Last P stehen müssen.In order to transport the load P , the load can be held by the lifting tines 12a, b at this height, ie floating above the wheel units 29a, b - which can of course be locked in their transverse position in the narrow driving position - are held according to Figure 2c or - to lower the center of gravity and relieve the lifting device 30 - be lowered by means of the lifting device 30 until the pallet P rests on the upper side of the two load legs 13b of the wheel carrier 13 according to Figure 2d and the lifting prongs 12a, b are relieved and no longer even have to be in contact with the load P.

Mögliche Weiterbildungen sind aus den Figuren 1a - d ersichtlich:
Am Steuerrohr 22 ist ein Lenker-Sensor 8 angeordnet, der den Einschlagwinkel 9 des Lenkers 5 gegenüber dem Chassis, also in diesem Fall dem Fahrer-Teil 2a des Chassis 2, misst, also wie in Figur 1a , b dargestellt, den Winkel zwischen der Längsrichtung 10 und der Hauptebene des Vorderrades 6. Possible further training courses are from the Figures 1a - d can be seen:
A handlebar sensor 8 is arranged on the control tube 22 and measures the steering angle 9 of the handlebar 5 with respect to the chassis, that is to say in this case the driver part 2a of the chassis 2, that is to say as in FIG Figure 1a , b shown, the angle between the longitudinal direction 10 and the main plane of the front wheel 6.

Der Lenkersensor 8 meldet diesen Einschlagwinkel 9 an die Steuerung 20, die in Abhängigkeit davon die Drehzahlen der beiden Fahr-Motoren 15a, b für die Hinterräder 16a, b und damit deren Drehzahl unterschiedlich steuert, in der Regel die Drehzahl des kurvenäußeren Rades schneller wählt.The handlebar sensor 8 reports this steering angle 9 to the controller 20, which, depending on this, controls the speeds of the two drive motors 15a, b for the rear wheels 16a, b and thus their speed differently, usually selecting the speed of the wheel on the outside of the curve more quickly.

Optional kann gemäß Figur 1c, d auch der gesamte Fahrer-Teil 2a gegenüber dem Lasten-Teil 2b des Chassis 2 um die Längsrichtung 10 des Lastenfahrrades geneigt werden, sodass sich der Fahrer-Teil 2a in die Kurve legen kann.Optionally, according to Figure 1c, d the entire driver part 2a can also be inclined relative to the load part 2b of the chassis 2 about the longitudinal direction 10 of the cargo bike, so that the driver part 2a can lean into the curve.

Wie am besten in Figur 3a, b zu erkennen, ist zu diesem Zweck der in der Regel horizontal verlaufende Unterzug 2a1 an seinem hinteren Ende als Lagerungsstelle 24 in einem sich daran nach hinten anschließenden Rohrstutzen drehbar gelagert, der Bestandteil des Lasten-Teils 2b des Chassis 2 ist.As can best be seen in Figure 3a, b , for this purpose the generally horizontal beam 2a1 is rotatably mounted at its rear end as a storage point 24 in a pipe socket connected to it to the rear, which is part of the load part 2b of the chassis 2 is.

Der Neigungswinkel 9' zwischen der Vertikalebene 21' und der Fahrerteil-Ebene 2a' wird von einem Neigungssensor 18 gemessen und an die Steuerung 20 gemeldet, der vorzugsweise an der Lagerstelle 24 angeordnet ist.The angle of inclination 9 ′ between the vertical plane 21 ′ and the driver's part plane 2a ′ is measured by an inclination sensor 18 and reported to the controller 20 , which is preferably arranged at the bearing point 24 .

Die Steuerung 20 berücksichtigt bei der Steuerung der Drehzahl der beiden unabhängigen Fahr-Motore 15a, b für die beiden Hinterräder 16a, b auch den Neigungswinkel 9', um eine sichere Kurvenfahrt zu ermöglichen, wobei vorzugsweise das Lastenfahrrad 1 auch einen - nicht dargestellten - Geschwindigkeitssensor aufweist und/oder einen Drehzahlsensor an den Motoren oder Rädern und/oder einen Drehzahlsensor am Vorderrad 6. When controlling the speed of the two independent drive motors 15a, b for the two rear wheels 16a, b , the controller 20 also takes into account the angle of inclination 9 'in order to enable safe cornering, the cargo bike 1 preferably also having a speed sensor (not shown) and / or a speed sensor on the motors or wheels and / or a speed sensor on the front wheel 6.

Die Figur 1b zeigt in der Seitenansicht eine Lösung mit einem zusätzlichen Tret-Antrieb 19:
Dort ist zu erkennen, dass - wie bei einem normalen Fahrrad - eine zweiarmige Tretkurbel um eine in Querrichtung 11 verlaufende Tretlagerachse, die etwa am Treffpunkt von Unterrohr 26 und Sattelstrebe 25 durch ein Tretlager verläuft, vorhanden ist, die an ihren Enden jeweils ein nach außen ragendes Pedal zum darauf treten mit den Füßen des Fahrers aufweist.the Figure 1b shows a side view of a solution with an additional pedal drive 19:
There it can be seen that - as with a normal bicycle - there is a two-armed crank around a bottom bracket axis running in the transverse direction 11, which runs through a bottom bracket approximately at the point where the down tube 26 and saddle strut 25 meet has protruding pedal to step on with the driver's feet.

Drehfest, insbesondere koaxial mit der Tretlagerachse, ist ein elektrischer Generator 14 angeordnet. Der durch Treten von diesem erzeugte Strom wird dem wenigstens einen Fahr-Motor 15 und/oder der Batterie 17 zugeführt über nicht dargestellte elektrische Leitungen. An electric generator 14 is arranged in a rotationally fixed manner, in particular coaxially with the bottom bracket axle. The current generated by pedaling is fed to the at least one drive motor 15 and / or the battery 17 via electrical lines (not shown).

BEZUGSZEICHENLISTEREFERENCE LIST

11
LastenradCargo bike
22
Chassischassis
2a2a
FahrerteilDriver part
2a'2a '
Fahrerteil-EbeneDriver part level
2a12a1
UnterzugGirder
2a1'2a1 '
SchwenkachseSwivel axis
2b2 B
LastenteilBurden part
33
Sattelsaddle
44th
drehbare Gabelrotating fork
55
LenkerHandlebars
5a, b5a, b
HandgriffHandle
66th
VorderradFront wheel
77th
Geschwindigkeits-GeberSpeed sensor
88th
Lenker-SensorHandlebar sensor
99
EinschlagwinkelSteering angle
9'9 '
NeigewinkelTilt angle
1010
Fahrtrichtung, LängsrichtungDirection of travel, longitudinal direction
1111
QuerrichtungTransverse direction
1212th
Ladungsträgercharge carrier
12a, b12a, b
HubzinkeLifting tines
1313th
RadträgerWheel carrier
13a,13a,
Träger-SchenkelCarrier leg
13b13b
Last- SchenkelLoad leg
1414th
Generatorgenerator
15a, b15a, b
Motorengine
16a, b16a, b
HinterradRear wheel
1717th
Batteriebattery
1818th
Neigungs-SensorTilt sensor
1919th
Tret-AntriebPedal drive
2020th
Steuerungsteering
21'21 '
Vertikal-EbeneVertical plane
2222nd
SteuerrohrHead tube
2323
GabelschaftSteerer tube
2424
Lagerungs-StelleStorage point
2525th
Sattelstrebe, SattelrohrSeat stay, seat tube
2626th
UnterrohrDown tube
2727
SattelstützeSeat post
2828
VerstellvorrichtungAdjusting device
29a, b29a, b
Rad-EinheitWheel unit
3030th
HubvorrichtungLifting device
3131
Zentral-ModulCentral module
PP.
Last, PaletteLoad, pallet

Claims (15)

Lastenrad (1) zum Transportieren einer Last, insbesondere einer Palette (P), wobei das Lastenrad (1) umfasst - wenigstens einen elektrischen Fahr-Motor (15a, b), der mit wenigstens einem der Rad (6, 16a, b) wirkverbunden ist, von denen wenigstens eines lenkbar ist - einem Chassis (2), umfassend - ein Fahrer-Teil (2a) mit - einem Sattel (3) für den Fahrer, einem im Fahrer-Teil (2a) schwenkbaren Lenker (5) und einem Rad, insbesondere Vorderrad (6), - insbesondere einem Geschwindigkeits-Geber (7), der insbesondere am Lenker (5) befestigt ist, für den Fahr-Motor (15a, b), - einem Lasten-Teil (2b) des Chassis (2), welches umfasst - einen Ladungsträger (12), - zwei in Querrichtung (11) zur Fahrtrichtung (10) zueinander beabstandete Rad-Einheiten mit je einem Rad (16a, b), insbesondere Hinterrad (16a, b), gekennzeichnet durch - eine Hubvorrichtung (30) mit dem anhebbaren Ladungsträger (12) zum Einfahren unter der Last und Anheben der Last, - eine Verstellvorrichtung (28), mit der der freie Quer-Abstand der in Querrichtung (11) beabstandeten Räder (16a, b), insbesondere Hinterräder (16a, b), veränderbar ist zwischen einer Lade-Stellung, in der er größer ist als die Breite der Last (P), und einer Fahr-Stellung, in der er geringer ist als die Breite der Last. Cargo bike ( 1 ) for transporting a load, in particular a pallet ( P ), the cargo bike ( 1 ) comprising - At least one electric drive motor ( 15a, b ) which is operatively connected to at least one of the wheels ( 6, 16a, b ), at least one of which is steerable - A chassis ( 2 ) comprising - a driver part ( 2a ) with - a saddle ( 3 ) for the driver, a handlebar ( 5 ) pivotable in the driver's part (2a ) and a wheel, in particular a front wheel ( 6 ), - In particular a speed sensor ( 7 ), which is attached in particular to the handlebar ( 5 ), for the drive motor (15a, b ), - A load part ( 2b ) of the chassis ( 2 ), which comprises - a load carrier ( 12 ), - Two wheel units spaced apart from one another in the transverse direction ( 11 ) to the direction of travel ( 10 ), each with one wheel (16a, b ), in particular rear wheel ( 16a, b ), characterized by - A lifting device ( 30 ) with the liftable load carrier (12 ) for moving in under the load and lifting the load, - An adjusting device ( 28 ), with which the free transverse distance of the wheels ( 16a, b ) spaced apart in the transverse direction (11 ), in particular rear wheels ( 16a, b ), can be changed between a loading position in which it is greater than the width of the load ( P ), and a driving position in which it is less than the width of the load. Lastenrad nach Anspruch 1,
gekennzeichnet durch
das Lasten-Teil (2b) in Fahrtrichtung (10) hinter dem Fahrer-Teil (2a) angeordnet ist.Cargo bike according to claim 1,
marked by
the load part ( 2b ) is arranged in the direction of travel ( 10 ) behind the driver part ( 2a ). Lastenrad nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
der anhebbare Ladungsträger (12) zwei in oder entgegen der Fahrtrichtung abstehende, in Querrichtung (11) zueinander beabstandete Hubzinken (12a, b) umfasst.Cargo bike according to one of the preceding claims,
marked by
the liftable load carrier ( 12 ) comprises two lifting prongs (12a, b ) which protrude in or against the direction of travel and are spaced apart from one another in the transverse direction (11). Lastenrad nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
in der Fahr-Stellung - die in Querrichtung zueinander beabstandeten Räder, insbesondere Hinterräder (16a, b) unter dem Ladungsträger (12) angeordnet sind, - insbesondere die Fahr-Breite zwischen den äußeren Enden der Hinterrad-Einheiten maximal der Breite der Last entspricht.
(Last ablegen auf Hinterrad-Einheiten:) Cargo bike according to one of the preceding claims,
marked by
in the driving position - the wheels spaced apart from one another in the transverse direction, in particular rear wheels ( 16a, b ), are arranged under the load carrier ( 12), - In particular, the driving width between the outer ends of the rear wheel units corresponds at most to the width of the load.
(Put the load on the rear wheel units :) Lastenrad nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch - die Rad-Einheiten (29a, b) je eine Rad-Abdeckung über dem jeweiligen Rad umfassen, - die Rad-Abdeckungen ausgebildet sind als Ladungsträger (12b) zum Absetzen der Last darauf während der Fahrt.
(Hubzinken dauerhaft als Ladungsträger:) Cargo bike according to one of the preceding claims,
marked by - The wheel units ( 29a, b ) each comprise a wheel cover over the respective wheel, - The wheel covers are designed as load carriers (12b ) for placing the load on them while driving.
(Lifting tines permanently as load carriers :) Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass - der in der Höhe bewegliche Ladungsträger (12a) in einer Höhe über den Rad-Einheiten (29a, b) fixierbar, insbesondere formschlüssig mechanisch verriegelbar, ist. und/oder - der wenigstens eine elektrische Fahr-Motor (15a, b), mit dem Vorderrad (6) oder wenigstens einem der in Querrichtung zueinander beabstandeten Räder (16a, b), insbesondere der Hinterräder (16a, b) wirkverbunden ist.
(Bewegung Hinterrad-Einheiten:) Cargo bike according to one of the preceding claims,
characterized in that - The vertically movable load carrier ( 12a ) can be fixed at a height above the wheel units ( 29a, b ), in particular can be mechanically locked in a form-fitting manner. and or - the at least one electric traction motor (15a, b), with the front wheel (6) or at least one of each other in transversely spaced wheels (16a, b), especially the rear wheels (16a, b) is operatively connected.
(Movement rear wheel units :) Lastenrad nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch
die Rad-Einheiten (29a, b) - entweder am Chassis des Lasten-Teiles (2b) befestigt und insbesondere in Querrichtung (11) verfahrbar sind - oder an der Hubvorrichtung (30) befestigt und insbesondere um eine in Fahrtrichtung (10) verlaufende Schwenkachse verschwenkbar sind.
und/oder - die Quer-Bewegung der Rad-Einheiten (29a, b) und/oder oder die Hubvorrichtung (30) von dem wenigstens einen Fahr-Motor angetrieben wird.
(Hubvorrichtung:) Cargo bike according to one of the preceding claims,
marked by
the wheel units (29a, b ) - Either attached to the chassis of the load part ( 2b ) and, in particular, can be moved in the transverse direction ( 11 ) - Or attached to the lifting device ( 30 ) and in particular pivotable about a pivot axis running in the direction of travel ( 10).
and or - The transverse movement of the wheel units ( 29a, b ) and / or or the lifting device ( 30 ) is driven by the at least one travel motor.
(Lifting device :) Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Hubvorrichtung (30) - wenigstens eine Gewindespindel-Einheit
oder - eine Seilwinde
für das Verfahren der Hubzinken (12a, b) in der Höhe umfasst.
(mit Steuerung) Cargo bike according to one of the preceding claims,
characterized in that
the lifting device ( 30 ) - At least one threaded spindle unit
or - a winch
for moving the lifting prongs ( 12a, b ) in height.
(with control) Lastenrad nach einem der vorhergehenden Ansprüche,
gekennzeichnet durch - je einen elektrischer Motor (15a, b) der mit je einem der Hinterräder (16a, b) wirkverbunden ist, - einen Lenker-Sensor (7) zum Detektieren des Einschlagwinkels (9) der Gabel (4) gegenüber dem Fahrer-Teil (2a), - eine Steuerung (20), die die Messsignale des Sensors (7) erhält und abhängig davon die Motoren (15a, b) für die Kurvenfahrt unterschiedlich schnell antreibt. Cargo bike according to one of the preceding claims,
marked by - one electric motor ( 15a, b ) each which is operatively connected to one of the rear wheels ( 16a, b), - a handlebar sensor ( 7 ) for detecting the steering angle ( 9 ) of the fork ( 4 ) in relation to the driver's part ( 2a ), - A controller ( 20 ) which receives the measurement signals from the sensor ( 7 ) and, as a function thereof , drives the motors (15a, b ) at different speeds for cornering. Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass - das Chassis (2) einen horizontal nach hinten weisenden Unterzug (2a1) des vorderen Fahrerteiles (2a) aufweist, welcher schwenkbar um eine in Fahrtrichtung (10) verlaufende Schwenkachse an dem hinteren Lasten-Teil (2b) befestigt ist. Cargo bike according to one of the preceding claims,
characterized in that - The chassis ( 2 ) has a horizontally rearward-facing girder ( 2a1 ) of the front driver part ( 2a ) which is attached to the rear load part ( 2b ) so as to be pivotable about a pivot axis extending in the direction of travel ( 10). Lastenrad nach einem der Ansprüche 9 oder 10,
dadurch gekennzeichnet, dass - ein Neigungs-Sensor (18) zum Detektieren des Schwenkwinkels (9') zwischen dem Unterzug (2a1) und dem Lastenteil (2b) vorhanden ist, - die Steuerung (20) auch die Messsignale des Sensors (18) erhält und abhängig davon die Fahr-Motore (15a, b) für die Kurvenfahrt unterschiedlich schnell antreibt.
(Lasten-Teil) Cargo bike according to one of claims 9 or 10,
characterized in that - An inclination sensor ( 18 ) for detecting the swivel angle ( 9 ' ) between the beam ( 2a1 ) and the load part ( 2b ) is present, - The controller ( 20 ) also receives the measurement signals from the sensor ( 18 ) and, depending on this, drives the drive motors (15a , b ) at different speeds for cornering.
(Load part) Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass - die quer beabstandeten Räder, insbesondere Hinterräder (16a, b), gegenüber dem Lastenteil (2b) des Chassis (2) gefedert sind, insbesondere unabhängig voneinander gefedert sind, - insbesondere indem sie jeweils an einer Schwinge befestigt sind, welche um eine Schwingenachse am Lastenteil (2b) verschwenkbar ist und insbesondere um die Schwingenachse herum ein Torsionskörper angeordnet ist, der eine Rückstellkraft in die Normallage der Schwinge bewirkt.
(Bremse) Cargo bike according to one of the preceding claims,
characterized in that - the transversely spaced wheels, in particular rear wheels ( 16a, b ), are sprung with respect to the load part ( 2b ) of the chassis ( 2 ), in particular are sprung independently of one another, - in particular by being attached to a rocker arm, which can be pivoted about a rocker axis on the load part (2b ) and, in particular, a torsion body is arranged around the rocker axis, which causes a restoring force in the normal position of the rocker.
(Brake) Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
die Fahrbremse aus dem wenigstens einen elektrischen Fahr-Motoren (15a, b) und deren Verzögerungs-Wirkung als Generator bei fehlender Stromzufuhr besteht.Cargo bike according to one of the preceding claims,
characterized in that
the driving brake consists of the at least one electric traction motor (1 5a, b ) and its deceleration effect as a generator when there is no power supply. Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
eine Feststellbremse mit Bremsbacken vorhanden ist, die in der nicht-bremsenden Stellung gehalten sind solange Strom aus dem Stromkreislauf des Lastenrades (1) anliegt und sich bei fehlendem Strom automatisch mittels Vorspannung in die bremsende Stellung bewegen, insbesondere durch Andrücken an einer Bremsscheibe.
(mit Tret-Antrieb)Cargo bike according to one of the preceding claims,
characterized in that
There is a parking brake with brake shoes that are held in the non-braking position as long as there is power from the circuit of the cargo bike (1) and, if there is no power, automatically move into the braking position by means of preload, in particular by pressing on a brake disc.
(with pedal drive) Lastenrad nach einem der vorhergehenden Ansprüche,
dadurch gekennzeichnet, dass
das Lastenfahrrad einen Tret-Antrieb (19) aufweist - mit einer zweiseitigen Tretkurbel, die drehbar um eine Kurbelachse im Fahrer-Teil (2a) gelagert ist und an deren Enden Pedale befestigt sind. - der mit wenigstens einem der Räder (6, 16a, b) in elektrischer Wirkverbindung steht, indem - der Tret-Antrieb mit einem elektrischen Generator (14), wirkverbunden ist, - der elektrische Generator (14) über eine elektrische, stromführende Verbindung mit den Elektro-Motoren (15a, b) und/oder einer Batterie (17) verbunden ist. Cargo bike according to one of the preceding claims,
characterized in that
the cargo bike has a pedal drive ( 19 ) - With a two-sided crank, which is rotatably mounted about a crank axis in the driver's part ( 2a ) and at the ends of which pedals are attached. - Which is in electrical operative connection with at least one of the wheels ( 6, 16a, b) by - the pedal drive is operatively connected to an electrical generator ( 14), - The electric generator ( 14 ) is connected to the electric motors ( 15a, b ) and / or a battery ( 17 ) via an electric, current-carrying connection.
EP21171591.7A 2020-05-06 2021-04-30 Cargo bicycle with width alteration Active EP3907126B1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102020112259.4A DE102020112259B4 (en) 2020-05-06 2020-05-06 Cargo bike with width change

Publications (2)

Publication Number Publication Date
EP3907126A1 true EP3907126A1 (en) 2021-11-10
EP3907126B1 EP3907126B1 (en) 2023-11-29

Family

ID=75746498

Family Applications (1)

Application Number Title Priority Date Filing Date
EP21171591.7A Active EP3907126B1 (en) 2020-05-06 2021-04-30 Cargo bicycle with width alteration

Country Status (2)

Country Link
EP (1) EP3907126B1 (en)
DE (1) DE102020112259B4 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115339561A (en) * 2022-08-10 2022-11-15 重庆鹏田车业有限公司 Domestic light tricycle

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2518820A (en) * 2013-09-04 2015-04-08 Malcolm Leadon Cargo transportation
DE102017005699B3 (en) * 2017-06-19 2018-06-28 RYTLE GmbH transportation Bicycle
WO2020053424A1 (en) * 2018-09-14 2020-03-19 RYTLE GmbH Receiving device for transport boxes

Family Cites Families (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE853392C (en) 1950-05-03 1952-10-23 Reinhold Lindenberg Tricycle, especially delivery tricycle
DE102014009780A1 (en) 2014-07-02 2016-01-07 Björn Marc Paulus Flexible transport system reversible swap bodies on three-wheeled (load) bicycles

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2518820A (en) * 2013-09-04 2015-04-08 Malcolm Leadon Cargo transportation
DE102017005699B3 (en) * 2017-06-19 2018-06-28 RYTLE GmbH transportation Bicycle
WO2020053424A1 (en) * 2018-09-14 2020-03-19 RYTLE GmbH Receiving device for transport boxes

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115339561A (en) * 2022-08-10 2022-11-15 重庆鹏田车业有限公司 Domestic light tricycle
CN115339561B (en) * 2022-08-10 2023-10-24 重庆鹏田车业有限公司 Household portable tricycle

Also Published As

Publication number Publication date
EP3907126B1 (en) 2023-11-29
DE102020112259B4 (en) 2022-03-03
DE102020112259A1 (en) 2021-11-11

Similar Documents

Publication Publication Date Title
EP2582570B1 (en) Load and/or transport scooter
EP3205564B1 (en) Load-carrying bicycle
EP2755886B1 (en) Transport vehicle having a three-wheel chassis
DE102016120697B4 (en) Semitrailer load cycling
EP0449029A1 (en) Hand-guided electric industrial truck
EP3907126B1 (en) Cargo bicycle with width alteration
WO2019201508A1 (en) Kick scooter and method for operating a scooter
EP0151624B1 (en) Transport vehicles
DE102019133724B4 (en) Trailer cargo bike
EP1707467A2 (en) Low-lifting industrial truck
DE202020106885U1 (en) Trailers, especially trailers, as well as a team with cargo bike and trailer
DE60310619T2 (en) Self-propelled vehicle for handling and transporting boxes
EP4182212A1 (en) Three-wheeled electric vehicle
WO2018018061A1 (en) Self-driving floor conveyor device
DE10004622B4 (en) Counterbalanced trucks
DE3835500A1 (en) Stacker truck
DE102015118777A1 (en) Three-wheeled vehicle
DE102017215399B4 (en) Self balancing vehicle
CN112744741A (en) Portable loading and unloading carrier
EP3552933A1 (en) Swappable container with supporting legs or trailer provided with supporting legs or load-carrying bicycle with supporting legs
DE2304107A1 (en) SMALL ELECTRIC VEHICLE
AT524329B1 (en) ELECTRICALLY OPERATED TRANSPORT OR. LOAD VEHICLE
EP4039560B1 (en) Pallet trailer
AT394985B (en) Single-track vehicle with sidecar
DE10352324B4 (en) Two-wheeled transport cart

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: REQUEST FOR EXAMINATION WAS MADE

17P Request for examination filed

Effective date: 20210823

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

B565 Issuance of search results under rule 164(2) epc

Effective date: 20210727

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: EXAMINATION IS IN PROGRESS

17Q First examination report despatched

Effective date: 20211201

GRAP Despatch of communication of intention to grant a patent

Free format text: ORIGINAL CODE: EPIDOSNIGR1

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: GRANT OF PATENT IS INTENDED

INTG Intention to grant announced

Effective date: 20230616

GRAS Grant fee paid

Free format text: ORIGINAL CODE: EPIDOSNIGR3

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE PATENT HAS BEEN GRANTED

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AL AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO RS SE SI SK SM TR

REG Reference to a national code

Ref country code: GB

Ref legal event code: FG4D

Free format text: NOT ENGLISH

REG Reference to a national code

Ref country code: CH

Ref legal event code: EP

REG Reference to a national code

Ref country code: IE

Ref legal event code: FG4D

Free format text: LANGUAGE OF EP DOCUMENT: GERMAN

REG Reference to a national code

Ref country code: DE

Ref legal event code: R096

Ref document number: 502021002044

Country of ref document: DE

REG Reference to a national code

Ref country code: LT

Ref legal event code: MG9D

REG Reference to a national code

Ref country code: NL

Ref legal event code: MP

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240301

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240329

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LT

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: IS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240329

Ref country code: GR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240301

Ref country code: ES

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: BG

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240229

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: RS

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: PL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: NO

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20240229

Ref country code: NL

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: LV

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129

Ref country code: HR

Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT

Effective date: 20231129